Pipe-fitting.



O. B. MUELLER L B. B. HODGMAN.

` PIPE FITTING.

APPLIOATION FILED MAY 18, 1909.

Patented Oct. 17, 1911.

0. B. MUELLER & B. B. HODGMAN.

PIPE FITTING.

APPLIOATION FILED MAY 1a. 1909.

Patented Oct. '17, 1911.

2 SHEETS-S'HBET 2.

fau/1MM also at the UNITED sTATEs PATENT OFFICE.

OSJAB. B. MUELLER, 0F NEW ROCHELLE, NEW YORK, AND BURT B. HODGMAN, 0F EAST,

ORANGE, NEW JERSEY, ASSIGNORS TO NATIONAL WATER MAIN CLEANING COM- '.PANY, A. CORPORATION 0F MAINE.

PIPE-FITTING.

Specification of Letters Patent. .l

Patented Oct. 17, 1911.

4York, and East Orange, Essex county, New

Jersey, have invented certain new and useful Improvements in Pipe-Fittings, of which the following is a specification.

Our invention relates to a pipe fitting particularly adapted for use in pipelines where access is desirable so that the pipes may be cleaned, and it is particularly adapted for use in water mains where it is desirable to have access to the pipe lines for the purpose of inserting cleaning devices. Y

A form of our invention is shown in the accompanying drawings in which- Figure 1 sho-ws the preferred form of our pipe fitting. Fig. 2'is' a sect-ion taken on the line a-a lof Fig. 1. Fig. 3 is a sectional view of Fig. 1 taken through the center of the lid or cover. Fig. 4 is a sectional view taken through the line b-b of Fig. 2 of a complete fit-ting. Fig. 5' is a sectional view of our improved pipe fittingn showing its adaptability for use as a means for insert-ing pipe cleaning devices into a pipe line system. In the drawings 1 represents our pipe fitting having a cover thereon. This fitting may be madea permanent part of the pipe line or may be inserted at any portion of the pipe line by removing another section" of pipe if it is desired to have it there temporarily only. At one end the fitting is made bell-shaped as at 4 for the purpose of being placed over the next adjacent section of pipe, while at the other end it is nozzle shaped as at 3 for the purpose of being placed within the bell-shaped portion of the next adjacent section of pipe. Each of the ends of the fitting when placed within a pipe line are yarned and calked in the ordinary way for preventing leakage. We make the greater partof the inner chamber of our fitting larger than the inner chamber of the pipe lines into which it is to be fitted, excepting at 'the nozzle end 3 where it is of the same diameter as the inner diameter of the pipe line into which itis to be placed and ortion marked 10 where it is of the same dlameter as at thenozzle end 3. The chamber 14, the inner diameter of .which is greater than the inner diameter of the Application led May 18, 1909. Serial No. 496,807.

pipe line into which it is placed, is preferab y made so that the diameters of the ends ofthe chamber gradually decrease until they become of the same diameter as the next adjacent. section of pipe, thus forming the nozzle' end 3 and the nozzle-like portion 10. The object of this being so that when a cleanlng device having cleaners of equal or greater diameter than the inner diameter of the pipe to be cleaned is placed within the ttin'g and is forced forward the gradual decreasing of the inner diameter of the chamber toward its ends compresses the cleaners and thus enables them to pass within the next adjacent section of pipe. The fitting 1 has a cut-out portion 8 through which access may be obtained to the inner part of the pipe line. This cut-out portion 8 is closed by means of a cover 2, which cover has its ends bell-shaped, as at 15, soas to set over the lug 5 and be yarned and calked to prevent leakage in the ordinary way. l In each end of this bell-shaped portion of the cover we cut out a recess or groove 14a, as shown, so that when the cover is in place the same is to be sealed by pouring in melted lead or other suitable material, which after the recess 13 is filled will flow into groove 14, and thus hold the molten material after it is set in place. The cover 2 has two lugs 9 running lengthwise which when the cover is in place set down upon the lugs 9 projecting from the outer diameter of the fitting 1 and is fastened thereon by suitable bolts 12.

We provide the under side of the lugs 9 of the cover 2 with a tongue 11, 11, adapted to set into the groove 9a in the llugs or flanges 9 of the body of the lfitting.

c In Fig. 5 we have shown our invention in use in connection with water mains, although it can be used in connection with any pipe line in which it is desirable to insert an object having a. Hexible diameter which is normally of the same or greater size than the 1 After the cleaning device has been inserted into the chamber and the lid 2 replaced the device passes throl gh the fitting into the pipe line proper, and as it passes from the enlarged chamber of the fitting the cleaners.

18, 18a and 19 are causedto contract toward the center of the pipe by reason of the diameter of the ends of the chamber gradually decreasing until the end of the chamber is of the same size as the inner bore of the Water main 20. We have shown in this Fig. 5 the cleaning device at such a point that the cleaners 18 have contracted and lie Within the pipe" line proper 20, While the cleaners 18a and 19 are in a position in the end of the chamber 14, so that the cleaners 18a are being gradually contracted While the cleaners 19 have not as yet begun to contract.

In the drawings We have shown the preferred form of our invention, although man changes might be made Without departlng from the invention. j

What We claim as new and desire to secure by Letters Patent is:

1. In a pipe fitting, an opening therein, a cover for said opening so arranged that when said cover is in position the inner surface of the cover registers with the inner diameter of the fitting, the ends of saidl cover being bell-shaped and having within the bell-shaped portion a groove, and means for fixedly securing said cover in position.

2. In a pipe iitting,an opening, a cover for said opening so arranged that when said cover is in position the inner surface of the cover registers with the inner diameter of the fitting, a groove in each of the ends only of said cover. 'i

3. In a pipe'iitting, an opening therein, a cover for said opening, Va groove in said fitting on the sides only, a tongue on said cover, adapted to register with said groove.

4. In a pipe fitting with a chamber, the inner circumference of the end thereof gradually decreasing until it is of the same circumference as the inner circumference of the next adjacent section of the pipe line and same being so constructed that any circumference in said fitting will be concentric centric With the circumference of the ends of the pipe, the inner circumference of the end of said chamber gradually decreasing until itis of the same circumference as vthc end of the pipe.

7 In a pipe itting, an enlarged chamber, an end of Which gradually decreases in size until it isA of the same diameter as the next adjacent section of. pipe, all so constructed that all diameters taken at any lgivencross section of said fitting will be the same.

y8. In a pipe fitting, an enlarged chamber, the ends of which gradually decrease in size until they are of the same diameter as the next adjacent section of pipe, all so constructed that all diameters taken at any given cross section of said fitting will be the same.

9. In a pipe fitting the combination of'a chamber, a cross-section of a portion of said chamber so constructed that any diameter of said cross-section is greater than the diameterof the adjacent sections of the pipe line, the ends of said chamber gradually .decreasing in size, until they are of the same diameter as the inner diameter of the pipe line.

In testimony whereof, We have signed our names to this specification, in the presence of two subscribing Witnesses.

oscAR B. MUELLER. BURT B. HoneMAN.

Witnesses: v

CLINTON INGLEE, Jos. L. PIERCE. 

